Machine



(No Model.)

D. A. MCDONALD.

GRIMPING MACHINE.

Patented Dec. 26, 1882.

ZU' Z'tHeSSSJ Inventor.

ilNiTE STATES PATENT QFFI E.

DOMINIOK A. MCDONALD, OF ROOKLAND, MAINE, ASSIGNOR OF ONE-HALF TOWILLIAM P. HURLEY AND JOHN E HANLEY, OF SAME PLACE.

C'RlMPlNG-MACHINE.

SPECIFICATION forming part of Letters Patent No. 269,693, dated December26, 1882.

Application filed August 24,1882. (Nomodel) To all whom it may concernBe it known that I, DOMINIOK A. MCDON- ALD, a subject of the Dominion ofCanada, having made oath of my intention to become 5 a citizen of theUnited States, and having resided at hiockland, in the county of Knoxand State of Maine, during four years last past, and being now aresident of said Rockland, have invented a new and useful Crimping-Machine, of which the following is a specification.

My invention relates to improvements in crimping-machines where thecrimping and stretching are done at once; and the objects of myimprovements are, first, to lessen the number of times of handling theleather or substance to be crimped and to stretch more perfectl thearticle crimped. l attain these objects by the mechanism illustrated inthe' accompanying drawings, in which- Figure l is a side view of themachine or block as it appears before the leather is attached; Fig. 2,anend viewotthesame. Fig.3 isacross-section oftheblock; Fig.4, theclamp;Fig. 5, a perspective view of the block with the leaves raised; Fig. 6,an end view with leather attached; Fig. 7, an end view with leavesclosed and clamp on.

Similar letters refer to similar parts throughout the several views.

In Fig. 1, a is the frame-work, shaped on top to suit the article forwhich a cover is to be crimped, with the movable side'leaves, b b,

hinged to the main block at their tops, so as to leave a smooth,unbroken surface when the 5 leaves are closed. 0 c are the hinges. e isthe clamp which secures the leaves in position when the leather is beingstretched, and d d d are the spurs, which project from the inner side ofthe leaves in a depression along their edges 40 to detain the leatherunder tension.

In practice, the body-piece a being first shaped to correspond to theform desired, whether it be a front for a boot or shoe or a cover for asaddle-tree, the leaves will then be 4 given a contour corresponding tothe form ofv the leather, which experience has shown is suit able forthe desired cover, the leaves being spread out as in Fig. 5, and theleather drawn over the form as in Fig. 6. Then by pressure 0 on theleaves they are brought into position with the hands as in Fig. 7 andthe clamp e sprung into position.

What I therefore claim as my inventioinantl desire to secure by LettersPatent, is 55 1. The combination, with the body a, of the leaves b,hinged thereto, and provided with the spur-hooks d, as and for thepurpose specified.

2. The combination, with the body a and the leaves I), provided with thespur-hooks d, of the 60 spring-clamp 0, adapted to embrace the leaves I)when folded, as and for the purpose'specified.

DOMINIOK A. MCDONALD.

(Witnesses:

CHAS S. DOB, A. D. BLACKINTON.

